Answer
4$r^{2}$-9
Work Step by Step
Given: (2r-3)(2r+3)
FOIL method: 4$r^{2}$+6r-6r-9
Combine like terms: 4$r^{2}$-9
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 8 - Polynomials and Factoring - 8-4 Multiplying Soecial Cases - Lesson Check - Page 507: 3
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